Amperagem para Barras Retangulares de Cobre (Corrente em Ampère por mm²)

Larg
pol		Larg
mm		Espes 1/16"
1,58		Espes
3/32"
2,38		Espes 1/8"
3,17		Espes 3/16"
4,76		Espes 1/4"
6,35		Espes 5/16"
7,94		Espes 3/8"
9,52		Espes 1/2"
12,70		Espes 5/8"
15,87		Espes 3/4"
19,05		Espes 1"
25,40
1/4006,35203040--------
5/16007,94253850--------
3/8009,5230456091121------
1/2012,70406081121161202242----
5/8015,875076101151202252302403---
3/4019,056091121181242303363484---
7/8022,2270106141212282353423564---
1025,4080121161242323403484645806968-
1 1/4031,75100151201302403504605806100812101613
1 1/2038,10120181242363484605725968120914521935
1 5/8041,271301962623935246557861048131015722097
1 3/4044,451402122824235657068461129141116942258
2050,801612423224846458079671290161219352581
2 1/4057,1518127236254472690810881452181421772903
2 1/2063,50201302403605806100812091613201524193226
2 3/4069,85221332443665887110913301774221726613548
3076,20241363483725968121014511935241929033871
3 1/4082,552613935237861048131115722097262031454194
3 1/2088,902814235648461129141216932258282233874516
3 3/4095,253014536049071210151318142419302336294839
4101,603214846449671290161319342581322538715161
4 1/2114,30--72510881452181521762903362843555806
5127,00--80512091613201724183226403148396452
5 1/2139,70--88613301774221826603548443453237097
6152,40--96614511935242029023871473758067742
6 1/2165,10--104715722097262231444194524062908387
7177,80--112716932258282333854516564367749032
7 1/2190,50--120818142419302536274839604672589677
8203,20--1288193425813227386951616450774210323
 
Nota: Coeficiente de Amperagem utilizado nos cálculos = 2,0 A/mm².
As informações aqui apresentadas poderão sofrer alterações sem prévio aviso.

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